Find the value of the variable. Leave in simplest radical form.

Mathematics

1 answer:

Mademuasel [1]4 years ago

8 0

If the hypotenuse is equal to 11, then we can plug it into the Pythagorean theorem. So we get a^2+x^2=121. So we take the square root of both sides, sqrt(a^2+x^2)=11. So we take a^2 and x^2 out of the square root. We get a+x=11. So now we have two equations, a+x=11 and a^2+x^2=121. I’ll leave the rest of solving equations to you.

Hint: a=11-x
You can plug that into a^2+x^2=121

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What number must be added to 15,-6,& 12 to have a mean of 5?<br> EXPLAIN!!

FrozenT [24]

To get the mean, you add all of the numbers, and then divide the answer by the number of numbers.

15+(-6)= 9
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The mean = 5, and the number of numbers is 4, so basically, you find 5•4=20

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4 years ago

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How would I solve this? i know how to solve easier variations but not like this the question is:

IRISSAK [1]

The linear function with values of f(-1)=8 and f(5)=6 is f(x) = $\frac{-x+23}{3}$ .

What is linear function?

A straight line on the graph has the equation or formula y = f(x) = px + q is linear function .One independent and one dependent variables are present. X and Y are the independent and dependent variables, respectively. P is the y-intercept or constant term, and it also represents the value of the dependent variable. A straight line on the coordinate plane is represented by a linear function.

Here the given values are f(-1)=8 and f(5)=6.

We know that f(x)=y , Then the points are (-1,8) and (5,6).

Using slope formula ,

=> slope m= $\frac{y_2-y_1}{x_2-x_1}$